Medical Neurobiology Commons^™

Comparative Analysis Of Takagi-Sugeno And Mamdani Fuzzy Inference Architectures With Anfis-Based Automated Rule Generation For Eeg-Based Cognitive State Monitoring, Amina Radončić, Mehrija Hasičić, Jasmin Kevrić

Communications of the IIMA

Fuzzy inference systems have demonstrated considerable promise for EEG-based cognitive state monitoring in neurodegenerative conditions. However, two design decisions significantly influence system performance and clinical applicability: the choice of inference architecture (Takagi-Sugeno vs Mamdani) and the method of rule and membership function generation (manual expert-driven vs data-driven automated). This paper presents a comparative analysis of both dimensions in the context of an EEG-based Alzheimer’s disease monitoring system operating on the ds004504 OpenNeuro dataset (88 subjects: 36 AD, 23 FTD, 29 HC). A Takagi-Sugeno system, implemented as a hybrid FSM-Fuzzy architecture, is compared against a Mamdani equivalent across four axes: inference …

No Evidence For Modulation Of The Readiness Potential By Respiratory Phase During Natural Breathing, Lucas Jeay-Bizot, Raniyah Chisti, Uri Maoz, Aaron Schurger

Psychology Faculty Articles and Research

Respiratory processes are increasingly implicated in shaping neural activity and behavior. Recent studies have reported a coupling between respiratory phase and the cortical readiness potential (RP), suggesting that breathing may modulate the neural processes preceding voluntary action. Here, using electroencephalography recordings in humans, we re-examine this claim using the original dataset and a new independent dataset, as well as in simulated data with no coupling. We show that the reported association arises from a confound: both RP amplitude and respiratory phase are coupled to movement onset. The original analysis does not control for this dependency, leading to a spurious effect …

Translational Initiative To Minimize Childhood Hemiparesis After Asymmetrical Perinatal Brain Injury, Susan V. Duff, Emily Garavatti, Terrie Inder

Physical Therapy Faculty Articles and Research

The purpose of this perspective paper is to present a translational approach aimed at identifying the critical periods in brain development during which to provide neuroprotective and neurorestorative strategies, followed by prehensile training, to minimize hemiparesis and foster skill acquisition after asymmetrical perinatal brain injury (APBI). We contend that hemiparesis could be minimized after APBI through a multimodal sequential approach based on timely implementation of evidence-based intervention strategies. If APBI is identified early, neuroprotective techniques can be used in the first 10 days of life to minimize cell death. This can be followed in the next 3 months by the …

Online Decoding Of Rat Self-Paced Locomotion Speed From Eeg Using Recurrent Neural Networks, Alejandro De Miguel, Nelson Totah, Uri Maoz

Psychology Faculty Articles and Research

Objective. Accurate and reliable neural decoding of locomotion holds promise for advancing clinical applications such as rehabilitation and prosthetic control, as well as for understanding neural correlates of action. Recent studies have demonstrated successful decoding of locomotion kinematics across species in motorized treadmill settings. However, efforts to decode locomotion speed directly and continuously in more natural contexts—where pace is self-selected rather than externally imposed—are scarce, and those that exist generally achieve only modest accuracy and require intracranial implants. Here, we aim to decode self-paced locomotion speed non-invasively and continuously using cortex-wide electroencephalography (EEG) recordings from rats. Approach. We introduce an …

Activated Dorsomedial Hypothalamic Astrocytes Regulate Feeding Behavior, Bella M. Lisenby

Honors Projects

The dorsomedial hypothalamus (DMH) region of the brain has been shown to be important for anticipatory feeding activity and play a role in restricting excessive food intake. In obese animals that overconsume calories, astrocytes within the DMH exhibit intracellular signaling changes indicative of cellular activation. Because astrocytes are known to influence neuronal function, we hypothesize that activated astrocytes regulate behavior. In the current study, we use chemogenetics combined with stereotaxic surgery to assess the contribution of astrocyte activity in the DMH towards metabolic behaviors.

Vergence Task-Based Neural Pathways With Binocularly Normal Vision And Comorbid Persistent Post-Concussive Symptoms -Convergence Insufficiency, Ayushi Sangoi

Dissertations

Binocular dysfunctions are more prevalent in the persistent post-concussive symptoms (PPCS) population than in the general population. The most prevalent binocular disorder is convergence insufficiency (CI), affecting 3-17% of the general population and up to 10 times as many people with PPCS. CI makes it difficult to fuse or maintain fusion on targets at near, and its symptoms include double or blurry vision and headaches when performing close-range tasks such as reading, which can exacerbate PPCS symptoms. Given controversy over the subjectivity and effectiveness of diagnostic tools and symptom surveys for both PPCS and CI, understanding why CI has high …

Rhythms Of Hippocampal Function And Memory After Moderate Prenatal Alcohol Exposure, Lilliana May Sanchez

Psychology ETDs

Fetal Alcohol Spectrum Disorders involve morphologic and neurobiological abnormalities in offspring subjected to prenatal alcohol exposure. Although not as well studied as high exposure, moderate prenatal alcohol exposure represents the most common and undetected form in humans. While learning and memory deficits have been well characterized at the behavioral level in humans with Fetal Alcohol Spectrum Disorders and in animal models of moderate prenatal alcohol exposure, few studies have determined the circuit or systems level mechanisms of the behavioral deficits. A complete understanding of the neural bases of memory deficits after moderate prenatal alcohol exposure is needed to ultimately identify …

Effectiveness Of Cognitive Stimulation Therapy On The Quality Of Life Of Adults With Dementia: A Secondary Analysis, Evelyn Airam

UNLV Theses, Dissertations, Professional Papers, and Capstones

This secondary analysis study evaluated the effectiveness of Cognitive Stimulation Therapy (CST) on quality of life (QoL), depressive symptoms, and cognitive function in 108 community-dwelling older adults with cognitive impairments, including dementia. Outcomes involved Quality of Life (QoL) measured by the Quality of Life in Alzheimer’s Disease (QoL-AD), symptoms of depression by the Cornell Scale for Depression in Dementia (CSDD), and cognitive function using the Saint Louis University Mental Status (SLUMS). After the CST, significant improvements were observed in QoL (p = .004), depressive symptoms (p = .002), and cognitive function (p < .001), with small effect sizes. Additionally, a significant interaction between sex and dementia diagnosis status was found in predicting cognitive changes, suggesting that the relationship between dementia diagnosis and cognitive improvement differs by sex. No between-group differences were found for QoL or depression. Findings support CST as a multidimensional, non-pharmacological intervention that improves cognitive, psychological, and social outcomes. Although effects were small, consistent improvements are clinically meaningful given the progressive nature of dementia. This study extends existing literature by demonstrating CST’s effectiveness in a community-based setting and reinforces its alignment with occupational therapy’s emphasis on participation and holistic care. Results highlight the need for early intervention and expanded access to CST programs to enhance quality of life in this population.

The Hidden Crisis: A Rare Case Of Thyrotoxicosis In A Young Female, Mimicking Neuromuscular Disease, Ali Haider Awan, Seerat Riaz, Hafiz Muhammad Hashim Butt, Sajeela Riaz, Fnu Sameeha, Hilana Soliman Omar, Shafia Naeem, Abida Perveen, Jahanzeb Malik

Journal of Community Hospital Internal Medicine Perspectives

Thyrotoxic periodic paralysis (TPP) is a rare but life-threatening cause of acute flaccid paralysis associated with hypokalemia. Although more common in males and individuals of Asian descent, it may present atypically in young females and be easily misdiagnosed. We report a case of a 30-year-old female who presented with acute quadriparesis. Extensive neuromuscular evaluation initially pointed toward Guillain-Barré syndrome (GBS), but subsequent investigations revealed profound hypokalemia. Further workup confirmed thyrotoxicosis as the underlying cause. Prompt potassium replacement and initiation of antithyroid therapy led to complete clinical recovery. This case highlights the importance of considering both endocrine disorders and electrolyte disturbances, …

Impaired Mitochondrial Magnesium Transport Induces Genome-Wide Transcriptional Changes In Hepatic Steatosis, Inflammatory Signaling, And Detoxification Pathways During High-Fat Diet Feeding, Abhishek Shastry, Thiruvelselvan Ponnusamy, Asha Parveen Sakkarai Mohamed, Marianne Assogba, Natarajaseenivasan Kalimuthusamy, Shanmughapriya Santhanam

Rowan-Virtua Research Day

Calcium overload during fatty diet consumption induces oxidative stress and mitochondrial apoptosis. Intramitochondrial magnesium inhibits calcium uptake into mitochondria; therefore, modulating the activity of the mitochondrial magnesium transporter Mrs2 may regulate calcium-induced hepatocellular stress. As previous work demonstrates that liver-specific Mrs2 inhibition increases hepatic lipid deposition, RNA-sequencing was performed to identify potential transcriptional mechanisms for hepatocellular stress.

Mrs2 knockout (Mrs2^KO) mice were generated by crossing male Mrs2^fl/fl mice with liver-specific-Cre transgenic mice. Eight-week-old wild-type (Mrs2^WT) and Mrs2^KO mice were placed on chow or high-fat diet (HFD) for 12 months (n=3/group). Whole liver was collected …

When The Clock Stands Still: Clock Time Vs. Experienced Time In The Emergency Department Brief Review: Neurobiology Of Time Perceptiontemporal Distortion As A Marker Of Cognitive Load And Operational Turbulence, James Espinosa, Alan Lucerna

Rowan-Virtua Research Day

Background: Emergency clinicians frequently report that time during ED shifts can feel unusually slow or unusually fast. This shared observation has rarely been examined formally in emergency medicine. Altered time perception has also been described in high demand professions such as aviation, sports, military operations, and emergency response. Individuals often report time dilation during critical events and time compression during highly coordinated performance. These findings suggest that temporal perception reflects underlying neurocognitive responses to environmental demands. Emergency departments share many characteristics with these environments, including rapid decision making, task switching, and intermittent high stakes events.

Objective:  Brief narrative review concerning …

Stromal Interaction Molecule (Stim) Proteins In Microglia And The Impact On Store-Operated Calcium Entry (Soce) And Spinal Cord Injury Recovery, Norah G. Hill

College of Arts & Sciences Senior Theses

In spinal cord injury (SCI), worsening functional outcomes are largely because of secondary injury processes and prolonged chronic inflammation. A major contributor of secondary injury is overload of intracellular calcium, causing neuronal overexcitation and persistent inflammatory responses. One of the primary mediators of calcium entry into the cell is store-operated calcium entry (SOCE). In SOCE, sensors detecting calcium depletion from the endoplasmic reticulum stores are called STIM proteins (1-2). When calcium is low in the cell, STIM proteins will activate Orai channels to open, allowing for the influx of calcium into the cell. The purpose of this study was to …

Targeting The Dorsolateral Prefrontal Cortex With Transcranial Direct Current Stimulation To Improve Depression And Anxiety In Parkinson's Disease, Brock Renicks

Honors Theses

The aim of this study is to observe the outcomes of transcranial direct current stimulation (tDCS) as a treatment for Parkinson’s Disease (PD). This study will primarily look at changes in depression and anxiety, as these symptoms are often comorbid with Parkinson’s Disease. Transcranial direct current stimulation is a non-invasive, very low-intensity form of electrical stimulation of the brain. It is being increasingly used as a form of treatment for Parkinson’s Disease and depression and anxiety, however the literature is ambiguous, showing mixed results throughout various studies, with no standardization of tDCS administration. To determine the effect of tDCS on …

Targeting The Dorsolateral Prefrontal Cortex With Transcranial Direct Current Stimulation To Improve Depression And Anxiety In Parkinson’S Disease, Brock Renicks

Poster Presentations

Around 40% of people with Parkinson’s Disease experience depression and anxiety (Zhao et al, 2025). Depression and Anxiety have been said to be localized to the dorsolateral prefrontal cortex (Brunoni et al, 2016). Transcranial Direct current stimulation (tDCS) has been shown to modulate depression and anxiety by targeting the dorsolateral prefrontal cortex (Sreeraj et al, 2023). It is beneficial due to its cost, portability, and simplicity of use. Thus we will be assessing the efficacy of tDCS in reducing depression and anxiety in individuals with Parkinson’s Disease.

Novel Biomarker Discovery In Multiple Sclerosis, Manisha Gangasani

Honors Theses

Multiple Sclerosis (MS) is a chronic neuroinflammatory disorder affecting the brain, spinal cord, and optic nerve. Patients experience cognitive, motor, autonomic, and emotional symptoms that often overlap with other neurological conditions, making early diagnosis challenging. Current diagnostic criteria require evidence of lesions with dissemination in time and space. Racial disparities in MS outcomes are well documented, with Black individuals often exhibiting greater disease severity, higher relapse rates, and increased disability compared to White individuals. These differences likely reflect a combination of genetic, biological, environmental, and healthcare access factors, underscoring the need to improve early diagnosis and reduce inequities in care. …

Use Of Electroencephalography To Evaluate Neural Correlates Of Attention In The Oddball Paradigm, Folsom J. Berry

Honors Theses

Electroencephalography (EEG) and Event-Related Potentials (ERP) are tools used to study and analyze cognitive processing. EEG measures neuroelectric brain activity from the scalp, while ERPs are time-locked averages that are used to isolate neural responses to stimuli. The P300 (P3) component (positive waveform elicited at 300 milliseconds (ms)) is the primary ERP component. This thesis project had two main objectives. The first objective was to develop conceptual and technical competency in EEG/ERP theory, data acquisition, and processing. The second objective was to implement the visual oddball paradigm through experimental demonstration. This experiment tested the hypothesis that infrequent target stimuli will …

Effects Of Limb Dominance On Dopaminergic Neurodegeneration In A 6-Ohda Rat Model Of Parkinson’S Disease Assessed By Immunoblotting, Jasin Aziz Porshia, Deanna Chaialee, Dipesh Pokharel, Kala Venkiteswaran, Thyagarajan Subramanian, Dilshan Beligala

ONU Student Research Colloquium

Effects of Limb Dominance on Dopaminergic Neurodegeneration in a 6-OHDA Rat Model of Parkinson’s Disease Assessed by Immunoblotting

Jasin Porshia^a , Deanna Chaialee^a , Dipesh Pokharel^b,c , Kala Venkiteswaran^{b, c, d} , Thyagarajan Subramanian^{b, c, d}, Dilshan Beligala^a

^aDepartment of Biological Sciences, Ohio Northern University, Ada, OH, USA

^bDepartment of Neurosciences and Psychiatry, The University of Toledo College of Medicine and Life Sciences, Toledo, OH, USA

^cDepartment of Neurology, The University of Toledo College of Medicine and Life Sciences, Toledo, OH, USA

^dDepartment of Neurology, Howard University, Washington, DC, …

Investigating Sertraline‑Mediated Modulation Of Succinate Dehydrogenase To Sensitize Tmz‑Resistant Glioblastoma Cells, Supraja Mallapuram

Create@State

Glioblastoma (GBM) is one of the deadliest and most common brain tumor which remains highly resistant to temozolomide (TMZ), contributing to poor patient outcomes. Literature suggests that sertraline, a widely used SSRI, disrupts mitochondrial metabolism in cancer cells. Because GBM depends heavily on succinate dehydrogenase (SDH) for oxidative phosphorylation, sertraline‑mediated SDH inhibition may increase metabolic stress and reduce functional TMZ resistance. This poster presents a literature‑based rationale and proposed experimental design to evaluate sertraline‑induced SDH modulation and its potential to sensitize TMZ‑resistant T98G glioblastoma cells. These findings will guide future experimental work.

Improving Anesthesia Provider Confidence In The Identification, Management, And Treatment Of Postoperative Delirium, Brittany M. Whistle, Charles Dustin Phelps

Scholars Week

Purpose: Postoperative Delirium (POD) is a potentially devastating complication of anesthesia that is poorly understood by clinical staff leading to poor outcomes for surgical patients. This study is meant to determine if a focused knowledge presentation accompanied by visual aids could increase anesthesia providers confidence in identifying, diagnosing, and treating Postoperative Delirium.

Methodology: Utilizing a statistical model to analyze respondents results on a standardized test administered before and after an informational presentation with visual aids on the topic of Postoperative Delirium.

Results: Results indicated a statistically significant difference between pretest and posttest scores, with a p-value of .002, t(11) = …

The Effects Of Body Mass Index On Fertility And In Vitro Fertilization, Morgan R. Kidd

Honors College Theses

In-vitro fertilization (IVF) is the most widely used type of assisted reproductive technology for treating infertility arising from a number of conditions. As obesity rates continue to climb in the United States, infertility has been discovered to have a direct correlation. Individuals that fall below or above the healthy body mass index range are found to have disrupted regulation of the hypothalamic-pituitary-gonadal axis, resulting in diminished reproductive health. Those that are diagnosed as infertile due to conditions caused by the effects of low body mass index or high body mass index may seek assisted reproductive technologies to intervene in achieving …